I just built an Estes Executioner with a 29mm MMT, it weighs in at 12.6 oz. and stands 38" tall.
If you're going to build a BIG rocket and still fly it on MPR motors, you pretty much have to use paper tubes. Anything else gets heavy fast, I built an Aspire out of blue tube and more than doubled the weight! Still trying to find a motor to fly it on, seems like all the AT reloads for my 29/40-120 casing don't have a long enough delay. Hoping to use the new CTI 3grain case I just bought for the next launch.
Are you coming to the Spring Blast this year Josh?
NAR 92675 L-2 Superstition Spacemodeling Society
I may be getting older, but I refuse to grow up.